1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b08b282e41c4f948aee4df996b589219e63db569924f838099de6e03e01dee7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33c37590-d3e5-4d34-adc1-e6c97d8bddc4.json and https://artists.proofprofile.net/proofs/artist/33c37590-d3e5-4d34-adc1-e6c97d8bddc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486637ea404678f564e9337041958cc498695b60bcb142f07f5917d8752e7066. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9M2345265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aee92f54bfef61758af7cff902bb753ce0a07210affe297a7365b3c4643431. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22294018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b6f35c7178c379451925ff0ab31615c2b9c8f50ce44169114b6232123446ec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2303538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c2f4ba01e59d8fd95ea6897a7f2bea0938ae8e1e4b552738168ca37e061ffc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2382245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc2f802fa4422620ae8a2472f27dc8d843d2b3637251fa11757b3a329e42c19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2382246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991a7b61f0a8fc0b5bef2ca8943c48730f48efa226834fce7eb0946b6a4603ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2382247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a147290cb79b240dcbec2dfb10bb6828575150c9b7a0f8144de6b779260508b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2382248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aee92f54bfef61758af7cff902bb753ce0a07210affe297a7365b3c4643431. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22294018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b478172bdf2398310408666cbb6d7ac6dfc35d9c65f860cca10599352748d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22289125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2c10a39d0265af9aad904a41b7ff6d9e46a79ef2bfea0339f719fc5dbcf76a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2159502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511a0ed017235fe8e100a02c2600200bdf38931add99fca5c49687128d63aaa5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2159503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fb7d83ff847911df54c15e82a4b5af0fab7f5d9c5d94ffde48948a4e5e41cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2159504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537e4400ced1bff0982cc3ec2c5591e7c8fd2c1f3feed1a6d300a63bded962f2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2159505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a6408b19abbc453397166b74849e1dd909baec2ed9bb7ef29210a92cf0195. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2360648.